Relief Pattern Transfer Sheet for Textile Decoration
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Solution Overview
Problem
The existing hot pressing transfer technique for ornamentation lacks the ability to create relief patterns, limiting aesthetic possibilities on supports like textiles and other materials.
Innovation Solution
A transferable sheet with a shape-retaining layer made from a high solids content polyurethane solution with partial polymerization, combined with a reinforcing layer based on fully polymerized resin, is used to create a relief pattern that retains its design after hot pressing, and includes a bonding layer for secure attachment to the support.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional transferable sheet is used for hot pressing transfer, then the transfer process is simple, but the aesthetic possibilities and relief pattern creation are limited
Solution Approach 1:
The transferable sheet is divided into multiple functional layers: a shape-retaining layer made from high solids content polyurethane solution with partial polymerization to create relief patterns, a reinforcing layer from fully polymerized resin to provide mechanical strength, and a bonding layer for attachment to the support. This segmentation allows each layer to perform its specific function optimally.
Solution Approach 2:
The sheet uses composite material structures combining polyurethane-based shape-retaining layers with reinforcing layers of fully polymerized resin. This composite approach enables the sheet to simultaneously achieve relief pattern formation, mechanical durability, and bonding capability, greatly expanding aesthetic possibilities.
2Ease of operation
If the transferable sheet is made flexible for easy handling, then the ease of operation improves, but the ability to retain relief patterns during hot pressing deteriorates
Solution Approach 1:
The shape-retaining layer is prepared in advance with partial polymerization of high solids content polyurethane solution, creating a prematurely blocked state that provides both flexibility for handling and the ability to retain relief patterns during the subsequent hot pressing process.
Solution Approach 2:
The polyurethane solution undergoes controlled polymerization parameter changes, transitioning from a flexible, partially polymerized state during handling to a more rigid, pattern-retaining state during hot pressing, allowing the material to adapt its properties to different operational requirements.
3Manufacturing precision
If the sheet is made thin for delicate detail work, then the manufacturing precision improves, but the mechanical strength and resistance to cracking deteriorates
Solution Approach 1:
The sheet structure segments the thin, detailed shape-retaining layer from a separate reinforcing layer of fully polymerized resin. This allows the front face to maintain thinness for delicate detail definition while the reinforcing layer provides the necessary mechanical strength and crack resistance.
Solution Approach 2:
The composite structure combines a thin shape-retaining layer with a reinforcing layer, creating a multilayer composite that achieves both high manufacturing precision for detailed patterns and sufficient mechanical strength to prevent premature cracking during handling and application.
4Ease of manufacture
If a single-layer sheet is used to simplify manufacturing, then the ease of manufacture improves, but the ability to create durable relief patterns with aesthetic depth deteriorates
Solution Approach 1:
The manufacturing process is segmented into distinct steps: forming the shape-retaining layer from high solids content polyurethane solution, adding the reinforcing layer of fully polymerized resin, and applying the bonding layer. This segmentation enables each layer to contribute specific aesthetic and functional properties that a single layer cannot achieve.
Solution Approach 2:
The multilayer composite structure creates aesthetic depth through the interaction of different layers with distinct shades and textures, where the shape-retaining layer provides relief patterns and the reinforcing layer adds visual depth, creating a more versatile and aesthetically pleasing finish than a single-layer sheet.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution allows for the creation of durable, aesthetically enhanced relief patterns on textiles and other materials, resisting mechanical stresses and maintaining visual appeal through the combination of distinct shades, effectively expanding the decorative possibilities of hot pressing technology.
Implementation Method 1
a shape-retaining layer obtained from a solution with a high solids content based on polyurethane exhibiting partial polymerization and blocked prematurely
Implementation Method 2
a layer of hot-melt adhesive, which is heated during the transfer until it temporarily melts
Implementation Method 3
a reinforcing layer covering said shape-maintaining layer and resulting from the drying of a fully polymerized resin solution based on polyurethane
Data Source
Figure 1~6
Figure 2
Figure 3
AI summary
The material for decorating a substrate of the invention includes a sheet (2) transferable by hot-pressing. A raised pattern (5, 6) is defined by a front surface (4) of said transferable sheet (2), a shape-holding layer (7) of which is obtained from a high polyurethane dry extract solution having a partial, prematurely blocked polymerization. The invention is usable in the field of fabric decoration.